(UK) The act of opening an academic disputation; the proposition of objections to a tenet, as an exercise for a degree.

plural of opponent

One who opposes another physically (in a fight, sport, game, or competition). / One who opposes another in words (in a dispute, argument or controversy).

(obsolete) Opposing; adverse; antagonistic. / (obsolete) Situated in front; opposite.

(obsolete) To oppose.

plural of opponency

simple past tense and past participle of oppone

present participle of oppone

(Church of England) A party who opposes the grant of a faculty for the alteration of a church.